6625071553 has 2 divisors, whose sum is σ = 6625071554. Its totient is φ = 6625071552.

The previous prime is 6625071493. The next prime is 6625071559. The reversal of 6625071553 is 3551705266.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3369570304 + 3255501249 = 58048^2 + 57057^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6625071553 is a prime.

It is not a weakly prime, because it can be changed into another prime (6625071559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3312535776 + 3312535777.

It is an arithmetic number, because the mean of its divisors is an integer number (3312535777).

Almost surely, 2^6625071553 is an apocalyptic number.

It is an amenable number.

6625071553 is a deficient number, since it is larger than the sum of its proper divisors (1).

6625071553 is an equidigital number, since it uses as much as digits as its factorization.

6625071553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 189000, while the sum is 40.

The square root of 6625071553 is about 81394.5425258967. The cubic root of 6625071553 is about 1878.1496386840.

The spelling of 6625071553 in words is "six billion, six hundred twenty-five million, seventy-one thousand, five hundred fifty-three".